Reviewers: rossberg,
Message:
PTAL.
Description:
Avoid bailing out to runtime for short substrings.
This significantly improves the speed for creating short substrings (less
than
13 characters) from slices, flat cons strings and external strings.
TEST=string-external-cached.js, string-slices.js
Please review this at http://codereview.chromium.org/8889012/
SVN Base: https://v8.googlecode.com/svn/branches/bleeding_edge
Affected files:
M src/ia32/code-stubs-ia32.cc
M test/mjsunit/string-external-cached.js
M test/mjsunit/string-slices.js
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